Patrick Steeves and Arnoldo Toro scored 15 points each for George Washington, which led for all but two minutes. Watanabe shot 11 of 20 from the floor, including 5 of 7 from 3-point range. He added eight rebounds.

The Colonials (10-14, 3-8 Atlantic 10) led 39-33 at the half. La Salle (10-14, 4-7) couldn't catch up with 38-percent shooting and 17 turnovers and fell to 2-12 away from home.